<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: '/goods' }">商品列表</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="消息提示的文案"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- tab栏区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name"
              ><el-input v-model="addForm.goods_name"></el-input
            ></el-form-item>
            <el-form-item label="商品价格" prop="goods_price"
              ><el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number"
              ><el-input v-model="addForm.goods_number" type="number"></el-input
            ></el-form-item>
            <el-form-item>
              <!-- options为数据值，cateProps,value:值，label：显示，children:子数组,change:当v-model所绑定值发生改变 -->
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
                placeholder="请选择第三分类"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="基本参数" name="1">
            <!-- 渲染表单item项 -->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3"
            ><el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload></el-tab-pane
          >
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
             <quill-editor  v-model="addForm.goods_introduce">

             </quill-editor>
             <el-button type="primary" class="btnAdd" @click="add()">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog
      title="图片预览"
      :visible.sync="previewVisible"
      width="50%"   
    >
    <img :src="previewpath" alt="" class="previewImg">
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: 0,
      //添加商品表单数据对象
      addForm: {
        goods_name: '',
        goods_price: '',
        goods_weight: '',
        goods_number: '',
        //商品所属分类数组
        goods_cat: [],
        //上传图片数组
        pics: [],
        //商品的详情描述
        goods_introduce:'',
        attrs:[],
      },
      //表单验证对象
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
      },
      //存储商品分类数据列表
      cateList: [],
      //层级选择框的配置对象
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      //存储动态参数列表
      manyTableData: [],
      //存储静态属性列表
      onlyTableData: [],
      //上传图片地址
      uploadURL: 'http://120.53.120.229:8888/api/private/v1/upload',
      //上传图片请求头
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      //存储上传图片路径
      previewpath: '',
      //显示与隐藏图片
      previewVisible:false,
    }
  },
  methods: {
    async getcateList() {
      const { data: res } = await this.$http.get(`categories`)
      if (res.meta.status != 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.cateList = res.data
      //   console.log(this.cateList)
    },
    //cascader所选的值发生改变触发事件
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        //表示不是三级选择
        return (this.addForm.goods_cat = [])
      }
    },
    //tab标签离开事件
    beforeTabLeave(activeName, oldActiveName) {
      //oldActive即将离开的标签页名字
      //activeName即将进入的标签页名字
      //   console.log(oldActiveName, activeName,this.addForm.goods_cat.length)
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('清先选择商品分类！！')
        return false
      }
    },
    //tab标签点击事件
    async tabClicked() {
      // console.log(this.activeIndex);
      if (this.activeIndex === '1') {
        //证明是动态参数面板
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'many',
            },
          }
        )
        // console.log(res.data);
        if (res.meta.status !== 200) {
          return this.$message.error('获取数据失败')
        }
        res.data.forEach((element) => {
          element.attr_vals =
            element.attr_vals.length === 0 ? [] : element.attr_vals.split(',')
        })
        // console.log(res.data);
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: 'only',
            },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取数据失败')
        }
        // console.log(res.data)
        this.onlyTableData = res.data
      }
    },
    //处理图片预览效果
    handlePreview(file) {
      console.log(file)
      this.previewpath = 'http://120.53.120.229:8888'+ file.response.data.url.split('http://127.0.0.1:8888/');
     this.previewpath= this.previewpath.replace(',',"/");
      // console.log(this.previewpath);
      this.previewVisible=true;
    },
    //处理移除图片的操作
    handleRemove(file) {
      console.log(file)
      const picInfo = { pic: file.response.data.tmp_path }
      let i = this.addForm.pics.indexOf(picInfo)
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm.pics)
    },
    //上传图片成功
    handleSuccess(response) {
      console.log(response);
      //1.拼接得到一个图片信息对象
      const picInfo = { pic: response.data.tmp_path }
      //2.将图片信息对象，添加到pics数组中
      this.addForm.pics.push(picInfo)
      console.log(this.addForm.pics)
    },
    //添加商品
    add(){
      //  console.log("add");
      this.$refs.addFormRef.validate(async valid=>{
        if (!valid) {
          this.$message.error('请填写必要的表单项');
        }
        //执行添加的业务逻辑
        // lodash.cloneDeep()深拷贝
        const form=_.cloneDeep(this.addForm);
        form.goods_cat=form.goods_cat.join(',');
        // console.log(this.onlyTableData);
        //处理动态参数
        this.manyTableData.forEach(item=>{
          const newInfo={
            attr_id:item.attr_id,
            attr_value:item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo);
        })
        //处理静态属性
        this.onlyTableData.forEach(item=>{
          const newInfo={
            attr_id:item.attr_id,
            attr_value:item.attr_vals
          }
          this.addForm.attrs.push(newInfo);
        })
        form.attrs=this.addForm.attrs;
        // console.log(form);
        //发起请求添加商品
        //商品名称，必须是唯一
       const {data:res}=await this.$http.post('goods',form);
       if (res.meta.status!==201) {
         return this.$message.error('添加商品失败')
       }
       this.$router.push('/goods')
      })
    },
  },
  created() {
    this.getcateList()
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length !== 3) {
        return null
      }
      return this.addForm.goods_cat[2]
    },
  },
}
</script>

<style scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.previewImg{
  width: 100%;
}
.btnAdd{
  margin-top: 15px;
}

</style>